New York state’s beleaguered, largest foreclosure law firm — which today announced plans to shut down in the face of a firestorm of legal action — has allegedly failed to turn over about $130,000 owed to three people whose co-ops were foreclosed on, and could be sitting on millions of dollars of hundreds of other people’s money without those people knowing, The Post has learned.

Steven J. Baum P.C.’s move to shutter came a week after it was made ineligible to get new referrals on any Fannie Mae or Freddie Mac mortgages — essentially a death knell for the controversial firm. The two federally backed mortgage giants moved in the face of numerous complaints about questionable legal filings by Baum.

On Friday, a Brooklyn lawyer sued Baum claiming that the firm repeatedly ignored his attempts to obtain about $130,000 for three people whose co-ops were foreclosed on and later sold off in Baum-supervised auctions.